Metallic CuS decorated CdS nanowires for efficient photocatalytic H2 evolution under visible-light irradiation

被引：57

作者：

Wan, Yuehu ^{[1
,2
]}

Du, Shiwen ^{[3
]}

Lu, Congrong ^{[1
,2
]}

Ren, Kuankuan ^{[1
,2
]}

Shi, Biyun ^{[1
,2
]}

Liu, Shiyan ^{[1
,2
]}

Li, Chunhe ^{[1
,2
]}

Dou, Weidong ^{[1
,2
]}

Fang, Ping ^{[1
,2
]}

Ye, Na ^{[1
,2
]}

机构：

[1] Shaoxing Univ, Lab Low Dimens Carbon Mat, Shaoxing 312000, Peoples R China

[2] Shaoxing Univ, Dept Phys, Shaoxing 312000, Peoples R China

[3] Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy, Dalian 116023, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2021年 / 871卷

关键词：

Photocatalytic H-2 evolution; Metallic CuS; CuS NPs/CdS NWs; Schottky heterojunction; DFT calculations; HETEROSTRUCTURES; DEPOSITION; STABILITY; MECHANISM;

D O I：

10.1016/j.jallcom.2021.159461

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Visible-light-driven photocatalysis holds a broad prospect for alleviating the energy crises. Here we report novel CuS nanoparticles/CdS nanowires Schottky heterojunctions via a two-step hydrothermal synthesis and used for photocatalytic H-2 generation driven by visible-light (lambda >= 420 nm). Compared with pure CdS NWs, the CuS/CdS nanocomposites show outstanding visible light H-2 evolution, with an optimal rate reaching 2076.5 mu mol h(-1) g(-1). The intrinsic properties of CuS/CdS nanocomposites, such as structure, optical properties, and combined configuration are systematically analyzed by experimental characterizations and theoretical calculations. The comprehensive results show that the Schottky junction between CuS NPs and CdS NWs accelerates photoinduced electron drift from semi-conductive CdS to metallic CuS, improving their activities of water splitting. This work offers a simple route to synthesize one-dimensional CdS-based nanocomposites for efficient visible-light driven energy conversion. (C) 2021 Elsevier B.V. All rights reserved.

引用

页数：10

共 38 条

[1] Steering charge kinetics in photocatalysis: intersection of materials syntheses, characterization techniques and theoretical simulations [J].

Bai, Song ;

Jiang, Jun ;

Zhang, Qun ;

Xiong, Yujie .

CHEMICAL SOCIETY REVIEWS, 2015, 44 (10) :2893-2939

[2] A solid-state approach to fabricate a CdS/CuS nano-heterojunction with promoted visible-light photocatalytic H2-evolution activity [J].

Cheng, Feiyue ;

Xiang, Quanjun .

RSC ADVANCES, 2016, 6 (80) :76269-76272

[3] CdS-Based photocatalysts [J].

Cheng, Lei ;

Xiang, Quanjun ;

Liao, Yulong ;

Zhang, Huaiwu .

ENERGY & ENVIRONMENTAL SCIENCE, 2018, 11 (06) :1362-1391

[4] CoSe2 modified Se-decorated CdS nanowire Schottky heterojunctions for highly efficient photocatalytic hydrogen evolution [J].

Du, Shiwen ;

Lin, Xiao ;

Li, Chunhe ;

Li, Guojun ;

Zheng, Baobing ;

Liu, Yong ;

Xu, Hu ;

Fang, Pengfei .

CHEMICAL ENGINEERING JOURNAL, 2020, 389

[5] Sponge Assembled by Graphene Nanocages with Double Active Sites to Accelerate Alkaline HER Kinetics [J].

Gu, Yu ;

Xi, Baojuan ;

Wei, Ruchao ;

Fu, Qiang ;

Qain, Yitai ;

Xiong, Shenglin .

NANO LETTERS, 2020, 20 (11) :8375-8383

[6] Visible-Light-Driven Valorization of Biomass Intermediates Integrated with H2 Production Catalyzed by Ultrathin Ni/CdS Nanosheets [J].

Han, Guanqun ;

Jin, Yan-Huan ;

Burgess, R. Alan ;

Dickenson, Nicholas E. ;

Cao, Xiao-Ming ;

Sun, Yujie .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2017, 139 (44) :15584-15587

[7] Optimal oxidation of CuxZn1-xS photocatalysts for enhanced solar H2 production by efficient charge separations [J].

Kahng, Soojin ;

Kim, Jung Hyeun .

CERAMICS INTERNATIONAL, 2021, 47 (02) :2848-2856

[8] Noble metal-free 0D-1D NiCoP/Mn0.3Cd0.7S nanocomposites for highly efficient photocatalytic H2 evolution under visible-light irradiation [J].

Kong, Dezhi ;

Yin, Di ;

Zhang, Dafeng ;

Yuan, Fangyuan ;

Song, Binxin ;

Yao, Shujuan ;

Yin, Jie ;

Geng, Yanling ;

Pu, Xipeng .

NANOTECHNOLOGY, 2020, 31 (30)

[9] Phosphorus-based metal-free Z-scheme 2D van der Waals heterostructures for visible-light photocatalytic water splitting: a first-principles study [J].

Lang, Junyu ;

Hu, Yun Hang .

PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 2020, 22 (17) :9250-9256

[10] Controlling the Core-Shell Structure of CuS@CdS Heterojunction via Seeded Growth with Tunable Photocatalytic Activity [J].

Li, Naixu ;

Fu, Wenlong ;

Chen, Chen ;

Liu, Maochang ;

Xue, Fei ;

Shen, Quanhao ;

Zhou, Jiancheng .

ACS SUSTAINABLE CHEMISTRY & ENGINEERING, 2018, 6 (11) :15867-15875

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